Local authorities have called off their search for a Canadian hiker missing in Australia's Snowy Mountains, the man's family says.

Prabhdeep Srawn, 25, of Hamilton, Ont., has been missing since May 13, when he went for a bushwalk in New South Wales.

"There's been so many areas that have not been searched, but the authorities have pulled out without doing a thorough investigation," Ruby Singh, Srawn's cousin to the CBC News Network host Michael Serapio on Saturday morning.

The family is offering a $15,000 reward for Srawn's safe return and has looked into hiring private companies to continue the search. But local authorities, she said, haven't been cooperative in providing the information that a private search party would need to conduct a the mission.

"We just want to find him, we just want to bring him home and we're willing to do whatever."

Search had been scaled back

Srawn was a Canadian Forces reservist from 2005 to 2011, belonging to the 31 Service Battalion's Hamilton Company. His immediate family moved to Brampton, Ont. in 2012 after he left for Australia.

Police began a search for him May 20, but the operation was scaled back earlier this week as officials had determined it was unlikely they'd find him alive.

New South Wales Police said in an email Thursday that bad weather had hampered Thursday's search.

The search involved a helicopter and nine officers, down from 15 on Wednesday.

The force had said Tuesday that the search would only continue for two more days, but on Thursday it said the operation would resume Friday morning.

Canada's minister of state for consular affairs says she has asked Australian authorities not to scale back the search.

"Canada has been actively working with Australian authorities to discuss the search mission and to convey the family's concerns," Diane Ablonczy said.

But Helene Laverdiere, the NDP critic for consular affairs, told the House of Commons during question period Tuesday that the government was doing "too little, too late," to find Srawn.

"When his family reached out for help, the government ignored them," Laverdiere said.

"Mr. Srawn proudly served our country. Now our country should be doing more for him. Why won't the Conservatives listen to the concerns of his family?"

With files from the Canadian Press